I would like to implement a new payment gateway via BigCommerce. It would consist in creating a button on Bigcommerce checkout page able to redirect to the payment gateway with payment parameters and subsequently manage the outcome of the transaction. According to BigCommerce live chat this operation is possible, but it's necessary to write in this community for more info (API, etc...). In the specifications we found only these indications https://developer.bigcommerce.com/api-docs/store-management/payment-processing . Could you give me some more tips on how to proceed?